Calculate the radius of a Au (gold) atom if Au atom has a face-centered unit cell ? it is given that its density = 19.32 g/cm3 .?
Assuming freezing point of benzene at 5.5 degree Celsius , (Benzene, C6H6, is an organic liquid ). Calculate How much energy (in the form of heat) is evolved if benzene of 15.5 g freezes at th temperature of 5.5 degree celsius? It is given that The enthalpy of fusion = 9.95 kJ/mol.?